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Advanced Materials

Highly Luminescent Flexible Quantum Dot–Clay Films

Authors

  • Hiroyuki Tetsuka,

    1. Research Center for Compact Chemical Process National Institute of Advanced Industrial Science and Technology (AIST) Nigatake 4-2-1, Miyaginoku, Sendai 983-8551 (Japan)
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  • Takeo Ebina,

    Corresponding author
    1. Research Center for Compact Chemical Process National Institute of Advanced Industrial Science and Technology (AIST) Nigatake 4-2-1, Miyaginoku, Sendai 983-8551 (Japan)
    • Research Center for Compact Chemical Process National Institute of Advanced Industrial Science and Technology (AIST) Nigatake 4-2-1, Miyaginoku, Sendai 983-8551 (Japan).
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  • Fujio Mizukami

    1. Research Center for Compact Chemical Process National Institute of Advanced Industrial Science and Technology (AIST) Nigatake 4-2-1, Miyaginoku, Sendai 983-8551 (Japan)
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  • The authors thank Drs. H. Nanjo and S. Matsuura for their kind technical assistance and Mr. T. Yamaguchi for HRTEM analysis. Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

Highly luminescent flexible CdSe/ZnS-clay films with a well-organized structure can be prepared by simple casting of aqueous dispersions of nanocrystals and clay. Through electrostatic interactions, negatively charged CdSe/ZnS nanocrystals are incorporated into the spaces between the positively charged edges of clay platelets. A substantial enhancement in photoluminescence efficiency is observed by introducing thermal annealing.

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